Constants (Calculation expression)

Within calculation expressions constants are also available with the syntax '$constantname'.

The constants listed below are supported:

Syntax	Importance
`$input`	Representative for the input data of the calculation expression. What the input data is depends strongly on the context in which the calculation is evaluated. For example, in a label expression for data grid cells, $input returns the entire row object. The context of the input data is usually explained by the respective entry in the manual.
`$null`	Stands for 'no value'.
`$true`	Returns the Boolean value true
`$false`	Returns the Boolean value false